Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithm" » "modified multiobjective optimization algorithms", "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithm"
"modified water solution algorithms" » "modified water solution algorithm", "modified water evolution algorithm", "modified water convolution algorithms", "modified male solution algorithms", "modified water absorption algorithms"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified multiobjective optimization algorithm") OR ("modified water solution algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified multiobjective optimization algorithm\") OR (\"modified water solution algorithms\"))".
• Removing quotes may allow a broader search: (( modified multiobjective optimization algorithm ) OR ( modified water solution algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified multiobjective optimization algorithm") OR ("modified water solution algorithms"))*.